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Old 2 Aug 2018, 07:14 PM   #12
vivil
Essential Contributor
 
Join Date: Nov 2004
Location: France
Posts: 471
Quote:
Originally Posted by BritTim View Post
I looked into mixing MX servers from different providers at one point. In theory, it seems like a good idea. Unfortunately, the priority settings do not seem to guarantee that he servers will be polled in that order.
SMTP concept (or well-known reference sendmail software concept) is to use the lower (or higher i forget) number server before the DNS MX request and using for the second try another server and so on...

Of course, the individual CPU/memory/network of every of these MX ***must*** be twice
the maximum capability daily e-mail volume of these MX to pick-up collapsed traffic from down MX servers..

RUNBOX use only one MX (ok its TTL is 5 minutes but...). I quit them for this reason; i did not know if they has a secondary MX backup...

Last edited by vivil : 21 Aug 2018 at 05:38 PM.
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